By Dr. Lisa Meek, Member ACVO A nutritional cataract is caused by either a deficiency or excess of a nutrient resulting in a loss of transparency of the lens. Nutritional cataracts have been identified in various species, including rats, pigs, wolves, fish and guinea pigs as well as dogs and cats. In dogs and cats ...

Definition of Cataracts The word cataract literally means ‘to break down’. This breakdown refers to the disruption of the normal arrangement of the lens fibers or its capsule, which results in the loss of the transparency of the lens and a reduction in vision. Cataracts often appear to have a white or crushed ice appearance ...